mirror of
https://github.com/danog/libtgvoip.git
synced 2024-11-27 04:34:42 +01:00
271 lines
8.3 KiB
C++
Executable File
271 lines
8.3 KiB
C++
Executable File
//
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// libtgvoip is free and unencumbered public domain software.
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// For more information, see http://unlicense.org or the UNLICENSE file
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// you should have received with this source code distribution.
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//
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#include "OpusEncoder.h"
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#include <assert.h>
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#include <algorithm>
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#include "logging.h"
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#include "VoIPServerConfig.h"
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#ifdef HAVE_CONFIG_H
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#include <opus/opus.h>
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#else
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#include "opus.h"
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#endif
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namespace{
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int serverConfigValueToBandwidth(int config){
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switch(config){
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case 0:
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return OPUS_BANDWIDTH_NARROWBAND;
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case 1:
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return OPUS_BANDWIDTH_MEDIUMBAND;
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case 2:
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return OPUS_BANDWIDTH_WIDEBAND;
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case 3:
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return OPUS_BANDWIDTH_SUPERWIDEBAND;
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case 4:
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default:
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return OPUS_BANDWIDTH_FULLBAND;
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}
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}
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}
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tgvoip::OpusEncoder::OpusEncoder(MediaStreamItf *source, bool needSecondary):queue(11), bufferPool(960*2, 10){
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this->source=source;
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source->SetCallback(tgvoip::OpusEncoder::Callback, this);
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enc=opus_encoder_create(48000, 1, OPUS_APPLICATION_VOIP, NULL);
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opus_encoder_ctl(enc, OPUS_SET_COMPLEXITY(10));
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opus_encoder_ctl(enc, OPUS_SET_PACKET_LOSS_PERC(1));
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opus_encoder_ctl(enc, OPUS_SET_INBAND_FEC(1));
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opus_encoder_ctl(enc, OPUS_SET_SIGNAL(OPUS_SIGNAL_VOICE));
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opus_encoder_ctl(enc, OPUS_SET_BANDWIDTH(OPUS_BANDWIDTH_FULLBAND));
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requestedBitrate=20000;
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currentBitrate=0;
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running=false;
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echoCanceller=NULL;
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complexity=10;
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frameDuration=20;
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levelMeter=NULL;
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vadNoVoiceBitrate=static_cast<uint32_t>(ServerConfig::GetSharedInstance()->GetInt("audio_vad_no_voice_bitrate", 6000));
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vadModeVoiceBandwidth=serverConfigValueToBandwidth(ServerConfig::GetSharedInstance()->GetInt("audio_vad_bandwidth", 3));
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vadModeNoVoiceBandwidth=serverConfigValueToBandwidth(ServerConfig::GetSharedInstance()->GetInt("audio_vad_no_voice_bandwidth", 0));
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secondaryEnabledBandwidth=serverConfigValueToBandwidth(ServerConfig::GetSharedInstance()->GetInt("audio_extra_ec_bandwidth", 2));
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secondaryEncoderEnabled=false;
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if(needSecondary){
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secondaryEncoder=opus_encoder_create(48000, 1, OPUS_APPLICATION_VOIP, NULL);
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opus_encoder_ctl(secondaryEncoder, OPUS_SET_COMPLEXITY(10));
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opus_encoder_ctl(secondaryEncoder, OPUS_SET_SIGNAL(OPUS_SIGNAL_VOICE));
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//opus_encoder_ctl(secondaryEncoder, OPUS_SET_VBR(0));
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opus_encoder_ctl(secondaryEncoder, OPUS_SET_BITRATE(8000));
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opus_encoder_ctl(secondaryEncoder, OPUS_SET_BANDWIDTH(secondaryEnabledBandwidth));
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}else{
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secondaryEncoder=NULL;
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}
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}
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tgvoip::OpusEncoder::~OpusEncoder(){
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opus_encoder_destroy(enc);
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if(secondaryEncoder)
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opus_encoder_destroy(secondaryEncoder);
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}
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void tgvoip::OpusEncoder::Start(){
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if(running)
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return;
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running=true;
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thread=new Thread(std::bind(&tgvoip::OpusEncoder::RunThread, this));
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thread->SetName("OpusEncoder");
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thread->Start();
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thread->SetMaxPriority();
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}
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void tgvoip::OpusEncoder::Stop(){
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if(!running)
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return;
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running=false;
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queue.Put(NULL);
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thread->Join();
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delete thread;
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}
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void tgvoip::OpusEncoder::SetBitrate(uint32_t bitrate){
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requestedBitrate=bitrate;
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}
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void tgvoip::OpusEncoder::Encode(int16_t* data, size_t len){
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if(requestedBitrate!=currentBitrate){
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opus_encoder_ctl(enc, OPUS_SET_BITRATE(requestedBitrate));
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currentBitrate=requestedBitrate;
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LOGV("opus_encoder: setting bitrate to %u", currentBitrate);
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}
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if(levelMeter)
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levelMeter->Update(data, len);
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if(secondaryEncoderEnabled!=wasSecondaryEncoderEnabled){
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wasSecondaryEncoderEnabled=secondaryEncoderEnabled;
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opus_encoder_ctl(enc, OPUS_SET_BANDWIDTH(secondaryEncoderEnabled ? secondaryEnabledBandwidth : OPUS_BANDWIDTH_FULLBAND));
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}
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int32_t r=opus_encode(enc, data, static_cast<int>(len), buffer, 4096);
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if(r<=0){
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LOGE("Error encoding: %d", r);
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}else if(r==1){
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LOGW("DTX");
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}else if(running){
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//LOGV("Packet size = %d", r);
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int32_t secondaryLen=0;
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unsigned char secondaryBuffer[128];
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if(secondaryEncoderEnabled && secondaryEncoder){
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secondaryLen=opus_encode(secondaryEncoder, data, static_cast<int>(len), secondaryBuffer, sizeof(secondaryBuffer));
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//LOGV("secondaryLen %d", secondaryLen);
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}
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InvokeCallback(buffer, (size_t)r, secondaryBuffer, (size_t)secondaryLen);
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}
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}
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size_t tgvoip::OpusEncoder::Callback(unsigned char *data, size_t len, void* param){
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OpusEncoder* e=(OpusEncoder*)param;
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unsigned char* buf=e->bufferPool.Get();
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if(buf){
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assert(len==960*2);
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memcpy(buf, data, 960*2);
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e->queue.Put(buf);
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}else{
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LOGW("opus_encoder: no buffer slots left");
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if(e->complexity>1){
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e->complexity--;
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opus_encoder_ctl(e->enc, OPUS_SET_COMPLEXITY(e->complexity));
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}
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}
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return 0;
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}
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uint32_t tgvoip::OpusEncoder::GetBitrate(){
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return requestedBitrate;
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}
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void tgvoip::OpusEncoder::SetEchoCanceller(EchoCanceller* aec){
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echoCanceller=aec;
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}
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void tgvoip::OpusEncoder::RunThread(){
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uint32_t bufferedCount=0;
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uint32_t packetsPerFrame=frameDuration/20;
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LOGV("starting encoder, packets per frame=%d", packetsPerFrame);
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int16_t* frame;
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if(packetsPerFrame>1)
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frame=(int16_t*) malloc(960*2*packetsPerFrame);
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else
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frame=NULL;
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bool frameHasVoice=false;
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bool wasVadMode=false;
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while(running){
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int16_t* packet=(int16_t*)queue.GetBlocking();
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if(packet){
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bool hasVoice=true;
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if(echoCanceller)
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echoCanceller->ProcessInput(packet, 960, hasVoice);
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if(!postProcEffects.empty()){
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for(effects::AudioEffect* effect:postProcEffects){
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effect->Process(packet, 960);
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}
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}
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if(packetsPerFrame==1){
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Encode(packet, 960);
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}else{
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memcpy(frame+(960*bufferedCount), packet, 960*2);
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frameHasVoice=frameHasVoice || hasVoice;
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bufferedCount++;
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if(bufferedCount==packetsPerFrame){
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if(vadMode){
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if(frameHasVoice){
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opus_encoder_ctl(enc, OPUS_SET_BITRATE(currentBitrate));
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opus_encoder_ctl(enc, OPUS_SET_BANDWIDTH(vadModeVoiceBandwidth));
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if(secondaryEncoder){
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opus_encoder_ctl(secondaryEncoder, OPUS_SET_BITRATE(currentBitrate));
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opus_encoder_ctl(secondaryEncoder, OPUS_SET_BANDWIDTH(vadModeVoiceBandwidth));
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}
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}else{
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opus_encoder_ctl(enc, OPUS_SET_BITRATE(vadNoVoiceBitrate));
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opus_encoder_ctl(enc, OPUS_SET_BANDWIDTH(vadModeNoVoiceBandwidth));
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if(secondaryEncoder){
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opus_encoder_ctl(secondaryEncoder, OPUS_SET_BITRATE(vadNoVoiceBitrate));
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opus_encoder_ctl(secondaryEncoder, OPUS_SET_BANDWIDTH(vadModeNoVoiceBandwidth));
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}
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}
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wasVadMode=true;
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}else if(wasVadMode){
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wasVadMode=false;
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opus_encoder_ctl(enc, OPUS_SET_BITRATE(currentBitrate));
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opus_encoder_ctl(enc, OPUS_SET_BANDWIDTH(secondaryEncoderEnabled ? secondaryEnabledBandwidth : OPUS_AUTO));
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if(secondaryEncoder){
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opus_encoder_ctl(secondaryEncoder, OPUS_SET_BITRATE(currentBitrate));
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opus_encoder_ctl(secondaryEncoder, OPUS_SET_BANDWIDTH(secondaryEnabledBandwidth));
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}
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}
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Encode(frame, 960*packetsPerFrame);
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bufferedCount=0;
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frameHasVoice=false;
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}
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}
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bufferPool.Reuse(reinterpret_cast<unsigned char *>(packet));
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}
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}
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if(frame)
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free(frame);
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}
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void tgvoip::OpusEncoder::SetOutputFrameDuration(uint32_t duration){
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frameDuration=duration;
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}
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void tgvoip::OpusEncoder::SetPacketLoss(int percent){
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packetLossPercent=std::min(20, percent);
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opus_encoder_ctl(enc, OPUS_SET_PACKET_LOSS_PERC(packetLossPercent));
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opus_encoder_ctl(enc, OPUS_SET_INBAND_FEC(percent>0 && !secondaryEncoderEnabled ? 1 : 0));
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}
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int tgvoip::OpusEncoder::GetPacketLoss(){
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return packetLossPercent;
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}
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void tgvoip::OpusEncoder::SetDTX(bool enable){
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opus_encoder_ctl(enc, OPUS_SET_DTX(enable ? 1 : 0));
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}
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void tgvoip::OpusEncoder::SetLevelMeter(tgvoip::AudioLevelMeter *levelMeter){
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this->levelMeter=levelMeter;
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}
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void tgvoip::OpusEncoder::SetCallback(void (*f)(unsigned char *, size_t, unsigned char *, size_t, void *), void *param){
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callback=f;
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callbackParam=param;
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}
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void tgvoip::OpusEncoder::InvokeCallback(unsigned char *data, size_t length, unsigned char *secondaryData, size_t secondaryLength){
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callback(data, length, secondaryData, secondaryLength, callbackParam);
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}
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void tgvoip::OpusEncoder::SetSecondaryEncoderEnabled(bool enabled){
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secondaryEncoderEnabled=enabled;
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}
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void tgvoip::OpusEncoder::SetVadMode(bool vad){
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vadMode=vad;
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}
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void tgvoip::OpusEncoder::AddAudioEffect(effects::AudioEffect *effect){
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postProcEffects.push_back(effect);
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}
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void tgvoip::OpusEncoder::RemoveAudioEffect(effects::AudioEffect *effect){
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std::vector<effects::AudioEffect*>::iterator i=std::find(postProcEffects.begin(), postProcEffects.end(), effect);
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if(i!=postProcEffects.end())
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postProcEffects.erase(i);
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}
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